Division or partition of geometric features

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2
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2answers
40 views

Mapping Russia - Int'l dateline splitting polygon

I am having the issue where the International Dateline is splitting a polygon I am working with. I have a layer of the "Federal Districts" of Russia, and the eastern most federal district is being ...
0
votes
0answers
26 views

What's the best way to break closed polyline using ArcObjects?

I have a polyline feature class with several closed lines (the start point = the end point). I need to break these lines in two features, using ArcObjects (doesn't matter Java, VB or C#). I have ...
1
vote
0answers
45 views

Splitting Line.shp at Point.shp with Python/ogr

I'm trying to modify some ESRI Shapefiles using Python with gdal/ogr module. What I want to do is quite simple, but I didn't find any solution by now. I have two shapefiles: (1) Lines.shp and (2) ...
0
votes
0answers
34 views

Dividing a polygon into certain areas (open source solution preferred)

I have a polygon with an area of 50.000m². Now i want to devide this area in two polygons of different areas with a line layer. The left polygon should have an area of 30.000m² and the right polygon ...
3
votes
1answer
50 views

Separated, but combined polygons - unable to split. What determines that?

In Mapinfo it works well when splitting polygons if they are physically separated(non-combined). However, occasionally when conducting "multiparts to singleparts" in QGIS, some errors occur, although ...
2
votes
0answers
48 views

How to split a raster into x tiles that overlapped by x km?

I have a raster that I split into three tiles by using the function Split raster in ArcMap as follows: How can I split my raster into three tiles that overlap by 2 km as follows : ?
1
vote
1answer
34 views

How to get the LineStrings from a MultiLineString

I was wondering if there is a way I can extract the LineStrings from a MultiLinestring object. What I am really trying to do is look into a MultiLineString and see if I have a certain LineString. I ...
1
vote
1answer
27 views

Split linear features from non-linear in the same feature class

I have a vector layer (Originally a raster layer) of well sites, cut blocks, and seismic lines all lumped together in the same feature class and no distinguishing attribute between them. I want to ...
1
vote
2answers
94 views

Split lines into non-overlapping subsets based on points

Given a table with line geometry, and one or more points that are snapped to this line in a separate table, I would like to split each line with one or more intersecting points at each of the ...
3
votes
2answers
122 views

Converting huge multipolygon to polygons

I have a shapefile with some huge multipolygons, with 100.000's of parts. What would be the easiest way to split them to singlepart polygons? I'm looking for something like QGIS ”Multipart to ...
1
vote
0answers
48 views

Splitting lines once at specified distance from each end?

This is related to an old problem of mine, regarding arrowheads on lines, which doesn't look very nice unless the line is very thin. It's even an ArcGIS idea with quite a lot of votes (although no ...
2
votes
0answers
36 views

Dividing a polygon into two OpenLayers

I'm using OpenLayers to draw a polygon to my users. I want the ability to implement through a line, split the polygon into two, with the cutoff line that the user drew. Does anyone know if this is ...
1
vote
1answer
55 views

Split a polygon based on density of points in ArcGIS 10.1

I have two layers: Polygon layer representing administrative boundaries Polygon layer representing topography (i.e. a map) In some of the administrative areas, the buildings (shown in the map) are ...
1
vote
2answers
61 views

Set a split policy/rule on a field without domain in ArcMap

Can you define a split policy or split rule on a field without a domain? When a domain is involved, you can set the default value of the field and chose a rule for when a feature is split or merged. ...
0
votes
1answer
69 views

Split a line from point but with a certain distance [duplicate]

I am using ArcGIS 10.2. I need some suggestion about this problem, maybe there is a certain tool, but I think no. I think some python code... but I do not know from where to start :( I have two ...
1
vote
1answer
56 views

How to split Polygons by line grid?

I want to split a polygon by a intersecting line into different parts, exactly like in this post(Qgis - Is there a way to split a polygon layer with a line layer?). I have a vector grid to cut the ...
1
vote
1answer
78 views

Force St_split() to return geometries in specific pattern

I'm Using PostGIS st_split() to split a polygon geometry by a linestring. Then I use st_dump() to return each of the splitted geometry and it is working fine. But the issue is I want to force ...
0
votes
0answers
93 views

Splitting multiple polygons with a line in JTS geotools

i am using geotools as my GIS map solution. now i want to split multiple polygons to build a road or river. passing through multiple polygons so, can you plz help me how to do this splitting a single ...
0
votes
2answers
94 views

How to split a shapefile feature?

The world map that I am using from NaturalEarth.com has France and French Guyana as one feature. I want to split these into two separate shapes. I'm sure there is a quick fix for this, and the others ...
2
votes
1answer
157 views

Using ST_split to split a line feature using nearby points

I have a line shapefile and a point shapefile, and the line has just one segment and its attribute table, the point shapefile has points near the line above, not on it and the close ...
0
votes
1answer
72 views

Removing slivers after splitting a polygon with a line

Image 1 shows before editing. Image 2 shows 'edited line which i used too split with and with labels Close up in 3rd image. I often split polygons with a line (ArcGIS 10.1 Split Polygon tool). In ...
0
votes
0answers
83 views

How to split an oblong, irregular polygon layer into even pieces?

I have a polygon layer (landuse) that I want to split into 100 meter pieces. The polygons show landuse along a road. I want to split the polygons layer so that I can then calculate the percentage of ...
0
votes
0answers
45 views

Split/Erase/Differentiate polygon by polygon within a same layer

Is it possible to split a polygon with a polygon within the same layer in QGIS ? As in the image, i want the Polygon 2 to be split & the pointed area has to be retained as a separate polygon. ...
0
votes
0answers
28 views

Chopping vector polygons

I am a Global Mapper user. In GM we have a function to chop polygons with holes in it. Is there such function in QGis? If yes, is it available via script? I am totally new to QGis so I would ...
0
votes
0answers
30 views

How to split a polygon by a polygon and apportion attributes - postgis [duplicate]

I would like to split polygons by polygons and have the numerical attributes be apportioned. For example: I have a parcel that needs to be split by region. With How to split polygons with another ...
0
votes
1answer
75 views

Identifying streets of same name where split by osm

I have a large map of every street in the country. This is a vector layer in QGIS many streets are split by OSM , IE have a different OSM ID yet the street has the same name. Often these streets are ...
0
votes
1answer
153 views

How do you change starting point on a polyline? (split tool)

There must be an easy fix for this. I am using the split tool and I want it to split a polyline into equal parts. For some reason, it is starting in the middle of my polyline. How do I force it to ...
3
votes
1answer
121 views

Split lines at intersections in PostGIS (must be simple but…)

I'm usually closer to my answer than now, but I've looked at all the answers here and couldn't adapt one to work on my data and I'm stuck. I have oriented polylines (Montreal's train network) and ...
1
vote
0answers
22 views

ST_SplitRight() in PostGIS?

I am looking to split a shapefile via a line. I am interested only in the feature that lies to the right of the line; exactly what ST_SplitRight does here. Do any of you know of a way to do this in ...
0
votes
1answer
69 views

Splitting hexagonal grid into segments, dissolve by location

I am a little bit frustrated because I want to do something I did 5 years ago and I can't figure out how to do it again. I am creating a turnover map of species communities using R and ArcGIS 9.3. As ...
1
vote
0answers
20 views

Is there a way of splitting roads at intersections with contours in QGIS?

I'm a beginner with QGIS. I need to split a polylines showing public roads at each intersection with a table containing elevation data (contours) which is also in polyline format. I will also need ...
0
votes
0answers
209 views

How to split multiple lines into equal parts or overcome split tool limitation using Basic or Standard license?

I would like to split multiple lines into equal aproximately 10m lengths. (Line length / 10m = number of segments) The split tool can only split one selected feature at a time. To overcome this I can ...
3
votes
1answer
87 views

Split single line based on the 3D length

so I have a transect line which I already add the z value using the Interpolate Shape. I need to split this line into 100m in 3D length, which due to elevation must be different than 2D. However the ...
0
votes
0answers
135 views

ArcMap 10.2 SplitLineAtPoint setSplitRule not calculating RATIO

I am trying to set a length field to use the RATION split policy. I set the split policy for the feature layer but when I use the SplitLineAtPoint_management it does not calculate the RATIO length. ...
0
votes
1answer
99 views

How to cut/split multipolygon with blade (linestring) into two pieces using PostGIS? [closed]

I struggle to do split operation in postgis I tried to build a query but Im always fail. Id like to cut a multipoligon with a blade (a linestring) into two pieces. These two objects have specific ...
2
votes
3answers
213 views

How to generate dartboard shapefiles using ArcGIS for Desktop?

I am rather new to ArcGIS and I have a simple question regarding a problem I cannot fathom. I am attempting to generate a polygon 'dartboard' shapefile. Radially, there should be a circle from 0 to ...
0
votes
3answers
305 views

splitting a lines layer using points

I'm looking to accomplish a similar task to this thread: How to split a line at point positions? Using QGIS and the Processing and GRASS toolboxes available, I'm looking to split a vector layer ...
1
vote
1answer
86 views

ET Geotools Split Lines at Vertices Issue

This might seem like a really simple question but for whatever reason I can't figure it out. How do I run the split line tool in ET Geotools on an entire polyline layer? I can do it for a single ...
3
votes
2answers
345 views

How to split lines at vertices in ArcGIS for Desktop with Basic level license?

Is there a way to work around splitting lines at vertices in ArcGIS for Desktop without an Advanced level license? I don't have the advanced license and I have a model that uses this tool. If need ...
0
votes
1answer
62 views

How can we split a polygon within another polygon in Qgis? [duplicate]

How can I split the green area as a separate polygon fro the grey one in QGIS?
7
votes
4answers
940 views

Splitting Linestrings on the dateline with OpenLayers

A couple of years ago I posted a questions titled "The International Date Line wrap around" @jdeolive suggested I split the features at the dateLine. So I tried. So when I try to split my satellite ...
0
votes
1answer
55 views

problems using the Split Features tool [closed]

i'm using the split features tool to create two polygons from a bigger one. The problem is, when i save the split i have done, half of the polygon disappears. But sometimes, after doing some more ...
3
votes
1answer
78 views

Is it possible to split a polygon inside another one in QGIS simply?

I can split polygon if I put the points of start and end outside the boundaries. How can I do the same if I have a part that I want to split completely inside a polygon. In Arcgis I can do it if the ...
0
votes
0answers
120 views

How to split a line at designated points and vertices(confluences)?

I have a line that already has its own segments and attribute table: I've used line dissolve tool in Geoalgorithms to make the previous attribute table look like this:so I make the segmented line ...
3
votes
1answer
46 views

Splitting lines and assigning two new values

It is my understanding that when a line is manually split using the split tool in ArcGIS 10, the geoprocessing follows a create and copy format, meaning that one new feature is created, while the ...
0
votes
0answers
110 views

How to change Split Vector by Attribute to produce files with attribute values as file names?

Using: QGIS 2.0.1 I am trying to separate a large fauna point .shp file into many shapefiles based on each species' unique name attribute (i.e. by "SCI_NAME" field)??? I am currently using "Split ...
0
votes
1answer
96 views

Split by attribute automatically on several layers in QGIS

I need to do a 2 stage split by attribute, using QGIS 2.0.1-Dufour. After the first split, I got 30 layers. Is there any way to do the second split automatically? I don't really like the idea to make ...
5
votes
1answer
364 views

How to split a 20 km² OSM file?

I want to create a 3D model of an OSM map using osm2world. Osm2World can render maps of large regions, for example, there is a 3D map of Austria and Germany (generated from OSM). I want to do ...
7
votes
2answers
1k views

Split a feature when intersecting with a feature of another layer using PyQGIS/Python?

I have a buffer layer (green polygon) which I want to split to two polygons whenever it crosses a barrier (blue line). I have been trying to use "splitGeometry" method, but I just can't get it to ...
1
vote
2answers
96 views

How can I split polygons in the Natural Earth 10m land shapefile?

This problem, that I have also been struggling with, in QGIS 1.7.3 as well. Here are the steps to reproduce the problem: 1)Download Natural Earth 10m land shapefile from original website. *2)*Open ...